Tides Today & Tomorrow in Squamscott River, Great Bay, NH

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 56m at 3:44 am (0.8 ft)
Next high tide : 9:32 am (6.0 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:25 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Sep 2076

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:437.24:057.010:140.310:280.56:097:17Waxing Crescent1Tue
2Wed4:187.04:377.010:470.411:060.56:107:15Waxing Crescent2Wed
3Thu4:556.95:137.011:230.511:470.56:117:13Waxing Crescent3Thu
4Fri5:366.75:537.112:030.66:127:12First Quarter4Fri
5Sat6:226.56:407.112:340.512:480.86:137:10First Quarter5Sat
6Sun7:156.37:327.11:250.51:390.96:147:08First Quarter6Sun
7Mon8:146.28:317.22:220.52:350.96:157:06First Quarter7Mon
8Tue9:186.39:367.43:240.43:380.96:167:05Waxing Gibbous8Tue
9Wed10:256.510:427.74:310.24:440.66:187:03Waxing Gibbous9Wed
10Thu11:286.811:448.15:35-0.15:470.26:197:01Waxing Gibbous10Thu
11Fri12:257.36:33-0.56:46-0.26:206:59Full Moon11Fri
12Sat12:428.41:197.77:26-0.87:42-0.66:216:57Full Moon12Sat
13Sun1:378.62:108.08:17-1.08:36-0.86:226:56Full Moon13Sun
14Mon2:318.63:008.29:07-1.09:29-0.96:236:54Waning Gibbous14Mon
15Tue3:238.43:498.39:56-0.910:22-0.96:246:52Waning Gibbous15Tue
16Wed4:158.14:378.210:44-0.611:14-0.76:256:50Waning Gibbous16Wed
17Thu5:087.75:287.911:34-0.16:266:48Waning Gibbous17Thu
18Fri6:047.26:227.512:09-0.312:260.46:276:47Third Quarter18Fri
19Sat7:036.77:197.21:080.01:220.86:286:45Third Quarter19Sat
20Sun8:046.48:196.92:080.42:221.26:306:43Third Quarter20Sun
21Mon9:066.19:216.83:120.73:241.46:316:41Third Quarter21Mon
22Tue10:086.110:226.74:160.84:281.46:326:39Waning Crescent22Tue
23Wed11:046.211:176.85:150.85:261.36:336:37Waning Crescent23Wed
24Thu11:536.46:060.66:151.16:346:36Waning Crescent24Thu
25Fri12:057.012:366.66:490.56:590.86:356:34Waning Crescent25Fri
26Sat12:487.11:156.87:270.47:380.66:366:32New Moon26Sat
27Sun1:277.21:517.08:020.38:140.56:376:30New Moon27Sun
28Mon2:057.22:257.18:340.38:490.36:386:29New Moon28Mon
29Tue2:407.22:567.29:060.39:240.26:406:27New Moon29Tue
30Wed3:167.13:287.39:380.310:000.16:416:25Waxing Crescent30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

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What time does the tide turn (slack tide) in Squamscott River, Great Bay, NH today?

Slack tide in Squamscott River, Great Bay, NH is approximately 6:38 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, NH is currently in a transitional phase. Tonight's moon is 71% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Squamscott River, Great Bay, NH tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Squamscott River, Great Bay, NH?

Tide predictions for Squamscott River, Great Bay, NH come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Squamscott River, Great Bay, NH?

Tide data for Squamscott River, Great Bay, NH is sourced from NOAA Station #8422687. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8422687.

What is the moon phase in Squamscott River, Great Bay, NH tonight?

Tonight the moon over Squamscott River, Great Bay, NH is Waxing Gibbous (71% illuminated). This places Squamscott River, Great Bay, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA